Home / 13,939.67-19,240.43-8,631.47

Finding the Fourth Proportional to 13,939.67, 19,240.43 and 8,631.47

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Solution

The fourth proportional to 13,939.67, 19,240.43 and 8,631.47 is: 11,913.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.67 : 19,240.43 = 8,631.47 : x
  2. Step 2: Convert to fraction form
    13,939.67/19,240.43 = 8,631.47/x
  3. Step 3: Cross multiply
    13,939.67x = 19,240.43 × 8,631.47
  4. Step 4: Simplify right side
    13,939.67x = 166,073,054.97
  5. Step 5: Solve for x
    x = 166,073,054.97/13,939.67
  6. Step 6: Final answer
    x = 11,913.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.